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Solar storage

What are the most effective and efficient ways to store solar energy? With technology advancing rapidly, there’s a wide range of systems and products to choose from. What should prospective users keep in mind when it comes to planning and costs? Read on to learn more.

The sintered solid-state battery cell developed at Fraunhofer IPA.

Solid-state battery sector eyes $9 billion market by 2035

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Technological progress and rising demand are accelerating the development of solid-state batteries. The sector is expected to gain significant market traction by 2025, according to a new report from IDTechEx.

Jiang Li, vice president of CATL, speaking at London Climate Action Week

CATL and Ellen MacArthur Foundation join forces for battery circularity

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The collaboration will focus on rethinking battery life cycles, with new pilot projects and policy dialogues aimed at scaling up reuse, remanufacturing and recycling across the supply chain.

Franz-Josef Feilmeier (left) of Fenecon in our CEO Talk 2025.

Fenecon – innovations driving C&I storage

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CEO Talk: The market for home storage is sluggish, while C&I and large-scale storage are gradually gaining ground. To boost sales, the right strategy is essential. The key question remains: What factors determine success in this market? Franz-Josef Feilmeier, CEO of Fenecon explains.

Yi Ding ist senior product manager for the new commercial storage system.

Yi Ding of Sigenergy – innovative DC storage for C&I

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PV on Tour: Sigenergy presents its commercial storage system, SigenStack. The modular solution incorporates AI and is paired with an external hybrid inverter delivering between 50 and 125 kilowatts, depending on configuration. As with the SigenStor residential system, SigenStack features a sophisticated safety concept.

A full house – members of the European Parliament vote in Strasbourg on 19 June 2025.

EU needs a tenfold boost in battery storage by 2030

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Members of the European Parliament are calling on the European Commission to propose an EU strategy on energy flexibility – an initiative backed by SolarPower Europe.

The nine series-connected sonnenBatterie 10 units are powered by a 60 kW photovoltaic system.

UNEF warns of slowdown in Spain’s storage market

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Spain’s storage market lost momentum in 2024, with new capacity additions falling sharply despite strong uptake alongside solar. A recent legal reform aims to revive battery deployment and speed up the energy transition.

Things are looking up – Axpo and EDP have launched their first utility PV power storage project in Poland.

Axpo and EDP partner on battery storage for 60 MW project in Poland

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The agreement marks a milestone for Poland’s energy storage market, with Swiss based energy company Axpo to manage and optimise a battery system co-located with EDP Renewables’ 60 MW PV plant.

The fusion of large battery storage systems with photovoltaic solutions is paving the way for new business models, including Eastern European countries like Bulgaria.

Bulgaria’s co-location project signals industry shift

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Bulgarian electricity trader Electrohold Trade is using software from Bavarian company The Mobility House to connect PV systems and battery storage with a combined capacity of 2.5 GWh.

Peter Gutendorf (right) provides insights into the new solutions offered by EcoFlow.

EcoFlow – more intelligence, more yield

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PV Guided Tours: Intelligent systems are replacing standalone components and AI now manages storage systems, wall boxes and energy flows to make the most of solar power. It’s not science fiction, it’s already here. Still sceptical? Prepare to be surprised!

Luis Haya is Chint's expert for safety.

Chint Power Systems – safe storage for C&I

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PV Guided Tours: Industry and commercial enterprises can reduce electricity costs in various ways using storage systems – but security is key. Luis Haya, Solution Manager Chint Power Systems, explains which features are needed to ensure security is safeguarded.

Martin Bayer from Lumenhaus explains the power of AI in solar storage control.

Lumenhaus – home storage with AI-based energy management

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PV Guided Tours: Lumenhaus aims to revolutionise the industry with a local direct sales model and its innovative SunSaver storage system. This all-in-one system integrates solar modules, charging stations, heat pumps and AI-based energy management via its own app. Assisted by customer-centred intelligence, the household storage aims make everyday life as convenient as possible.

Leonard Friese (right) of Tesvolt presents the new Forton storage system.

Tesvolt – new outdoor storage container

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PV Guided Tours: The new Tesvolt Forton battery system enables commercial enterprises to participate profitably in energy trading for the first time. Thanks to high-temperature cells with LFP technology, classic applications such as peak load capping and solar self-consumption are now more cost-effective. A 15-year performance guarantee with two full cycles per day ensures a secure investment.

CEO Bryan Liu (left) tells us all about his company’s latest innovations.

Zendure – AI-powered energy systems for homes

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CEO Talk: Discover the new AI-powered plug-in home energy systems, featuring intelligent energy forecasts, consumption planning and optimisation. Save on costs with real-time tariff data and seamless, secure control of storage systems.

Michael Hierholzer from Rolls-Royce dicusses the complex projects in which the company is involved.

Rolls-Royce – managing complexity in large-scale storage

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CEO Talk: Demand for large storage systems is surging across Europe, but delivering them involves major challenges – from permitting and financing to construction and operation. Michael Hierholzer of Rolls-Royce explains why experienced and reliable partners are key.

Maximilian Münnicke from Huawei (right) takes a deep dive into new solutions for project busness.

Huawei FusionSolar – utility storage with a Prime security certificate

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PV Guided Tours: Huawei FusionSolar is unveiling its new Luna2000 utility-scale battery storage system with a capacity of five MWh. The current 4.5 MWh systems have already received the Prime safety certificate from TÜV Rheinland.

Sand and solar panels as far as the eye can see, and soon to feature a vast battery facility.

SMA to power 918 MWh battery project in Chile

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The storage system in the Atacama Desert complements an existing 220 MW PV plant and includes black-start capability.

Vinzent Weiler (right) goes into the many details of the powerful SAX Power storage system.

SAX Power – capable inverter-free AC storage

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PV Guided Tours: SAX Power offers an AC storage system that operates without a battery inverter. It is also a multi-talent – suitable for both new solar systems and retrofits. Is this storage system really as simple as the provider promises? Watch the video to find out.

Marie Isabelle Grote from Denios says: No compromises on safety!

Denios – storing energy safely

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PV Guided Tours: The new integrated system Power Store, combining a C&I battery storage unit with a safety container, offers comprehensive protection in the event of thermal runaway. When designing storage systems for commercial applications, both customised system design and rapid amortisation are essential considerations. Watch the video to learn more!

Fabian Thral (right) gives us the details of the new systems from Fenecon.

Fenecon – three new storage systems for C&I

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PV Guided Tours: Fenecon presents the Industrial XL with 1.5 megawatts and four megawatt hours in a new container format for large-scale projects, alongside a new flexible power pack for SMEs and the updated Commercial 92 in an innovative split tower design.